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Very simple question about MMA7455 — Parallax Forums

Very simple question about MMA7455

Sink0Sink0 Posts: 2
edited 2010-12-15 11:55 in Accessories
Hi, i have a question about MMA7455. Can i make use of it with out the "DATA READY" line? Can i just set it to auto sample mode and request the data when i want? Accuracy is not a big issue and neither BW. I just need a notion on how inclined my board is, but not an accurate value. I need to save some pins of my application, so do not have to use any other line than I2C would be great.

Comments

  • kwinnkwinn Posts: 8,697
    edited 2010-12-15 11:55
    Judging by what the data sheet says (page 9) the data for a measurement remains in the output value register until it is read or until another measurement is completed so the data is always available. The problem is you may read the data from one axis that is from the first measurement, and the next axis may be from the second. measurement. Not a big problem if the accelleration data changes slowly.
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